Accession Number : AD0717968

Title :   Development of Laminate Metal Matrix Composites.

Descriptive Note : Final rept. 3 Nov 69-31 Oct 70,

Corporate Author : NORTON RESEARCH CORP CAMBRIDGE MASS

Personal Author(s) : Hordon,M. J.

Report Date : NOV 1970

Pagination or Media Count : 50

Abstract : Laminar composites were fabricated by diffusion bonding boron carbide coated titanium foil sheets with individual layer thicknesses varying in the range 2-25 um. The mechanical properties varied with boron carbide content. At 42 pct. BC reinforcement, the biaxial, planar tensile strength and elastic modulus was 105 ksi, and 35.1 x 10 to the 6th psi, respectively. For laminates bonded above 850C, a brittle reaction phase zone was formed. Fracture crack patterns were observed to extend along the reaction phase boundary. Interlaminar shear strength values of 4000-5800 psi can be attributed to brittle phase formation. (Author)

Descriptors :   (*COMPOSITE MATERIALS, TITANIUM), (*LAMINATES, TITANIUM), (*REINFORCING MATERIALS, CARBIDES), BORON COMPOUNDS, BOUNDARY LAYER, TENSILE PROPERTIES, PHASE DIAGRAMS, VAPOR PLATING, DIFFUSION BONDING, MANUFACTURING

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE